ORA-39065: unexpected master process exception in DISPATCH

Issue while running the export command:

Export: Release 11.2.0.3.0 - Production on Wed Sep 30 19:34:01 2015

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Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
ORA-39006: internal error
ORA-39065: unexpected master process exception in DISPATCH
ORA-00600: internal error code, arguments: [kokle_lob2lob13:input mismatch], [1], [], [], [], [], [], [], [], [], [], []

ORA-39097: Data Pump job encountered unexpected error -600

Cause: JOB_QUEUE_PROCESSES was  set to 0

show parameter JOB_QUEUE_PROCESSES

job_queue_processes                  integer

0

Solution: Modified the parameter and restarted the database.

alter system set JOB_QUEUE_PROCESSES=2 scope=spfile;

show parameter JOB_QUEUE_PROCESSES

job_queue_processes                  integer

2

SQL> shutdown immediate;

Database closed.

Database dismounted.

ORACLE instance shut down.

SQL> startup;

ORACLE instance started.

Total System Global Area 4710043648 bytes

Fixed Size                  2236248 bytes

Variable Size            3758096552 bytes

Database Buffers          838860800 bytes

Redo Buffers              110850048 bytes

Database mounted.

Database opened.

SQL> 

Retest the issue it should resolve the expdp error.